SealSkinz Ultra Light Sock

Based in the UK, SealSkinz® have have neatly solved the problem faced by every cyclist who rides in the rain; that of cold and wet hands and feet. Thanks to their patented membrane system, SealSkinz® socks and gloves are fully wind and waterproof, yet so completely normal to the touch that you would think nothing special was going on at all.

How does it work?

SealSkinz® socks and gloves use a type of membrane called hydrophilic ("water loving"). Hydrophilic membranes are totally solid, without pores. It is therefore physically impossible for droplets of liquid water to pass through the membrane, however, it is breathable because water vapour molecules are transmitted from molecule to molecule through the membrane on the polymer chain and expelled on the other side. The driving forces are the differences in humidity and temperature between the atmospheres on each side of the film.

The internal climate, next to the skin, is hot and humid because the body is generating heat and moisture as it exercises. The external climate is much drier and cooler. Consequently water vapour is driven from the inside of the garment to the outside. As the foot gets hotter during an activity, so the film becomes more efficient at expelling moisture.

Testing, testing..

SealSkinz® know that riders need confidence in their equipment, that is why every single SealSkinz® product is tested before it leaves the factory, with the sock or glove mounted onto a machine which subjects it to water pressure. If any product leaks, the item is rejected and diced. Every SealSkinz® product is therefore guaranteed to be 100% waterproof. The waterproof film can withstand 10psi of hydrostatic head pressure, the equivalent of a column of water 700cm high standing on the fabric surface. This is 7 times the level required to meet European Standards for waterproof clothing.

Take a look at this great video showing the waterproof abilities of the SealSkinz® Socks. Note the dry footprint compared to the other brand's sock on the rider's left foot.